Steel Forged Round Bar TG AISI D2/DIN 1.2379/SKD11 Forged Tool Die Steel Round Bar Annealed Peeled Surface Size 70 Mm 700mm

Product Overview

Description

steel round bar D2/1.2379/SKD11  

 

 

1,High hardenability,hardened,high wear resistance.

2,High-temperature oxidation resistance is good,and after quenching

 and polishing corrosion resistance is excellent,small deformation after heat treatment.

3,Grade: D2,1.2379,X155CrMoV121,BD2,XW-42.

 

DIN 1.2379 - Germany/B.S. BD 2 - United Kingdom/ASTM A681 - US
FED QQ-T-570 - US/SAE J437 - US/SAE J438 - US/UNS T30402 - US
AISI D2 Air Hardening Tool Steel - US

 

 

Heat treatment                                                                                                       

 

Isothermal annealing:

 

-   Heat to 870÷880°C;

 

-   Furnace cooling to 760°Cand hold at temperature for at least 10 hours;

 

-   Cool by 10°C/h to 720°C;

 

-   Cooling in air.

 

Stress relieving:

 

To be carried out after machining and before the final heat treatment.

 

-   Heat to 650÷700°C, hold for 4/6 hours:

 

-   Furnace cooling to 330÷350°C;

 

-   Cooling in air.

 

Hardening:

 

-   Initial preheating to 350÷450°C;

 

-   Second preheating to 750÷850°C

 

-   Austenitizing at 1010÷1040°Cor at 1080÷1100°C;

 

-   Cooling in air or in oil if large parts.

 

Quenched hardness: 62÷66 HRC

 

Tempering:

 

    In the temperature range 150÷300°Cwith minimum holding time 3 h.

For parts hardened at 1080÷1100°C, a first tempering will be carried out at

500÷550°Cin order to exploit secondary hardness, followed by a second tempering

at 180/300°C.

 

 

Chemical composition:

C	Si	Mn	Cr	Ni	Mo	V	P	S
1.40-1.60	≤0.60	≤0.60	11.00-13.00	11.00-13.00	0.70-1.20	≤1.10	≤0.030	≤0.030

 

Application:

Suitable for impact and extrusion molds of high output,thread twisting molds,molds for ceramics, molds for electric circuit plates and plastic molds of high output.

 

 

Youli mainly produces hot and cold work dies steel, for each product we do fine and special. To H13, Cr12MoV, Cr12Mo1V1-oriented products, providing you with superior quality mold steel, welcome to email or to phone, we will provide you with quality service!